Competitors should be the solo original author of their works, and assure the legal copyright.

参赛者必须是参赛作品的独自原创作者，并保证其拥有该作品的合法著作权。

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The public domain is a category of works made up of text, images and documents that are not protected by an active legal copyright.

公共域是一类由文本、图像和文档等构成的作品，不受现行版权法保护。

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A. The public domain is a category of works made up of text, images and documents that are not protected by an active legal copyright.

公共域是一类由文本、图像和文档等构成的作品，不受现行版权法保护。

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On Wednesday, a Canadian judge ruled, in effect, that file-sharing was legal under Canadian copyright law.

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And all this copying is completely legal, because copyright law doesn't cover apparel design.

WSJ: In Praise of the Copycats: The Knockoff Economy

This anti-innovation provision stems from legislative action begun in the 1960s when few people fully understood the copyright legal system and its implications.

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